Systems and methods for classifying signals of interest in a cardiac rhythm management device

The present disclosure provides systems and methods for classifying signals of interest in a cardiac rhythm management (CRM) device. A CRM device includes an intrinsic activation sensing circuit configured to pass signals falling within a first passband, a crosstalk sensing circuit configured to pass signals falling within a second passband, wherein the second passband contains higher frequencies than the first passband, and a computing device communicatively coupled to the intrinsic activation sensing circuit and the crosstalk sensing circuit, the computing device configured to classify a signal of interest as one of an intrinsic activation signal and a crosstalk signal based on whether the signal of interest is passed by the intrinsic activation sensing circuit and the crosstalk sensing circuit.